The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2017
Filed:
Apr. 08, 2014
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Memory-tech Holdings Inc., Minato-ku, Tokyo, JP;
Hideharu Tajima, Osaka, JP;
Masaki Yamamoto, Osaka, JP;
Hirohisa Yamada, Osaka, JP;
Takayuki Naka, Osaka, JP;
Masahito Konishi, Chikusei, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
MEMORY-TECH HOLDINGS INC., Tokyo, JP;
Abstract
A reproducing device () includes (i) an optical pickup () for irradiating, with reproduction light, an optical disk () which is a super-resolution medium, (ii) an RF signal processing circuit () for converting, into a reproduction signal, light which reflected off optical disk (), (iii) an i-MLSE detecting section () for evaluating quality of the reproduction signal, and (iv) a spherical aberration correcting section () for correcting a spherical aberration by using a result of evaluation of the quality of the reproduction signal.